#!/usr/bin/env python
#
# Public Domain 2014-2019 MongoDB, Inc.
# Public Domain 2008-2014 WiredTiger, Inc.
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# Generate input data to GNUplot from checkpoint information in a wtperf run

import sys

time = 0 # seconds
print("%d, %d" % (0, 0))

for line in sys.stdin:
    if line.strip().endswith('secs'):
        time += int(line.split(' ')[7])
    if line.startswith('Finished checkpoint'):
        duration = (int(line.split(' ')[3]) + 500) / 1000 # convert ms to secs
        print("%d, %d" % (time - duration, 1))
        print("%d, %d" % (time, 0))
